Tractor snowplow



March 12, 1929. R. As. PELLET-re 11,704,923

TRACTOR SNOWPLOW Filed March 15, 1926 3 Sheets-Sheet l- I EL, v.

March 12, 1929. R. PELLETTE TRACTOR sNowPLow 5MM/.9.3% #e w f m m March 12, 1929.

R. s.` PELLETTE TRACTOR SNOWPLOW Filed March 15. 1926 5 Sheets-Sheet 5 VWF @umm

Patented Mar. 12,1929.

Unire smrgfsy einen Peres-rer rica l ROBERT S. PELLETTE, KENNETT SQUARE, PENNSYLVANA, `ASSGrNOR TO AMERL CAN-ROAD MACENERY COMPANY, NC., OF KENNETT SQUARE, FENNSYLVANA,

A CORPORATON OF DELAWARE.

TRACTOR sNowPLow.

Application led March 1 5, 1926.` ASerial No. 94,664.

My invention relates to snow plows and more particularly to plows of the V type adapted to be propelled or "pushed by means of a tractor.r

In plows of the character to'which my usually in such a manner'that it may be' lifted vertically or tilted up when not plowing and hoistingimeans.carried by the frame are provided for adjustment of the plow.

Plows of the character Vindicated have provenv substantially satisfactory, buty have been-found open to certain criticisms which materially effect their eiliciency. For eX- vample, when such a plow is utilized in snow of substantial depth, it has been foundthat the snow plowed out tends to fall baclrinto the cut below the plow and further, that on attempting to plow out an old cut yafter a fresh storm, the sides of the old cut prevent the plow from disposing of the vfresh snow. Further, if it be necessary to plow hard snow, which offering substantial resistance to the plow tends to lift its nose, the plows known heretofore ride up on the snow and are inefficient.`

Now itis an object of my invention to provide 'a plow, which will effectively dispose of the snow plowed out in such a manner that the cut may be subsequently re-V plowed without difficulty and in an effective manner. y

Another object of my invention is to pro` vide a plow whichmay be readily adjusted so as to avoid any riding up of the nose of the plow when plowing -in hard snow.

Further objects of my invention are to provide a plow of the character indicated which will be highly efficient and durable. and at the same time simple ofoperation and manufacture.

Having now indicated, in a general way, the nature and purpose of my invention, I will proceed to a detailed description thereof with reference to the accompanying` drawings in which there' has been illustiateda` preferred embodiment and-in which kligure l, is a side view of a plow bodying my invention.r V

Figure 2, is a plan view of the plow shown in Figure l. y

Figure 3, is a, front view'of the plow shown in Figure l. s f

lnthe several gures'the plow is formed by the converging blades a, which "are braced by means of a framing Z9 composed of channel members secured to each other and to the blades. Beneaththe nose of the plow isy positioned a roller o and rollers CZ are posi-4 tioned for the support of the blades between their ends@ i y e indicates the front member of a frame for the receptionofl a tractor which is secured to the frame through connection with brackets f. lThe plow is connected tothe frame through brackets g, secured to the frame near the lower endthereof, and'providing vertical tracks for lcarriages formed by a pair of rollers Zt supporting a body or frame The carriages are retained for vertical movementin the brackets by means of rods y' secured to the brackets and upon which the rollers bear. The plow is pivotally connected to the carriages or runnersk Close to the bottom ofthe plow by vmeans of brackets le secured to the framing Z) and piv otally connected with the bodies 7l by pins Z.

By virtue ofthe `form of connection bej tween the plow and tractor frame, the plow is pushed directly by said connections and may be raised vertically in the brackets g of which are secured a pair of chains s pro vided at their ends with hooks t. The chains s are adapted to be connected to the front' and rear portions .of the plow by passing through eyes u, secured to the plow, and en,-

gaging with themselves through the medium of hooks t, illustrated in Figure l.

It will-be observed that the length of the chains 3 and hence the length of the connection between the front and back of the plow will be lifted ahead of the front which will thus be allowed to tilt Adown andcausc the plow 'lo dig into the snow. By reversing the relative length of thefront and rear chains s the front of the plow may be lifted ahead Y of the rear and the front tilted up preventing the plow from digging into the snow and enabling the upper portion of a deep drift to be plowed out without stalling the plow.

VThe plow blades a, which as has been described, converge to form a il plow, are normally substantially y rectangular and formed withV a concave face-in order to pick up and pass the snow laterally from the rear of the blades. Removably vsecured to the upper port-ion of the rear end of each of the blades is a flared extension o, which extends above and beyond the end of the blade. The extensions i; are preferably formed with a concave face generally rvconforming to the curve of thefaceof the blades and in their extension beyond the ends of the blades are formed with upwardly curved lower edges and curved ends; Their upper edges extend Y upwardly above the blades in a "substantially straight line.

It'will be observed, from an inspection of Figure 3, that in operation the extensions o will act to convey snow picked up and conveyed by the blades a and at the same time will act to prevent the forming of a shoulder in the cut made by the plow ;v with the result that snow will not fall back behind the plow and on replowing there will be no interference with the disl )osal of fresh snow which will be handled by the blades and extensions ranged to be pushed by the frame and is capable of pivotal movement,V said means including a supporting member `having connection with the plow, said connection being adjustable relatively tothe center of gravity ofthe plow to determineits normal pivotal movement, and means for raising said supporting member. y

In testimony of which invention, I have hereunto set my hand, at Kennett Square, Pa., on this ninth day of March, 1926.

ROBERT S. PELLETTE. 

